Introduction
Assessing cardiopulmonary function is important for both athletes and the general population. There are obvious reasons for athletes. Although in the general population, VO2 max can be used to predict subsequent development of cardiovascular disease. Therefore, VO2 max studies can be used to prevent the development of cardiovascular sequelae such as angina or myocardial infarction, both primary and secondary.
In addition, since cardiopulmonary health has been decisively associated with early death for a variety of reasons, VO2 max studies in the general population are urgent.
So what is the maximum VO2? Well, in general, it is the volume [V] of oxygen [O2] during the maximum movement that your body can transfer. It is well known that during exercise, your body needs energy, and the chemical reaction that produces energy requires oxygen [especially aerobic exercise]. Therefore, the higher your VO2 maximum, the more effective your body can deliver oxygen during gut training. Therefore, you will be able to train longer at a higher intensity level.
Method for estimating the maximum VO2
The maximum or secondary maximum motion test scheme can be used to measure VO2 max. Maximizing exercise testing involves pushing the subject to the limit of strenuous exercise. Therefore, it is usually necessary to seek medical attention immediately. The maximum motion test is a true reflection of VO2 max. However, for obvious reasons, it is best to avoid this method, at least in the general population. Most authors recommend using a submaximization method [using the submaximal load of exercise intensity]. Once the value is obtained using this method, the regression ratio will be used to predict the actual maximum VO2.
However, the maximum exercise test is more sensitive and the second maximum exercise test is safer, especially. Implemented in a population that has not been approved for training.
Maximum exercise test:
Maximum exercise testing requires trained personnel and advanced equipment. Therefore, it is only used in certain clinical settings.
Secondary maximum exercise test
Astrand and Rhyming Step Test: This test uses a 33cm step/aerobic bench for females and a 40cm step for males. It involves steps up or down the steps at a rate of 22.5 per minute. Perform an electrocardiogram and steady-state heart rate readings. For women and men, oxygen uptake of 25.8 and 29.5 mL / Kg / min is required.
The YMCA Step Test and the Canadian Home Fitness Test are also available for the next largest exercise test. Step testing is popular because of the minimal equipment and ease of implementation. Another major advantage is the lowest cost and the fact that a large number of subjects can be tested simultaneously, as shown in the Canadian Home Fitness Test.
3-minute YMCA Step Test: This test determines how quickly your heart rate returns to normal after a workout. It uses a 12-inch aerobic bench. Subjects were stepped onto the bench at a rate of 24 per minute [estimated oxygen uptake was 25.8 mL / Kg / Min.]. After 3 minutes, the subjects immediately dropped and calculated HR for one minute. It is essential that the calculation of HR begins within 5 seconds of stopping the exercise. The obtained HR values are then used to compare against established standards.
Treadmill test: at least 3 minutes. A treadmill test using a 70% heart rate reserve or 85% maximum heart rate as a test endpoint better predicts VO2 max than a step test. Very similar to step testing, achieving a stable heart rate is essential to get accurate data. Therefore, a test of at least 3 minutes is required. Use a variety of treadmill test protocols: The Bruce protocol is the most popular.
Cycle dynamometer test
Astrand-Rhyming Cycle Ergometer Test: This is a 6-minute single-stage test. The subject pedaled at 50 rpm to achieve an HR of 125 to 170 beats per minute. HR should be measured at 5 and 6 minutes of the test. An average of 2 or more HR readings were taken and used to estimate VO2max from the modified Astrand-Rhyming Normogram.
Other tests such as Maritz Test use a multi-stage cycle dynamometer test to determine the maximum VO2.
in conclusion
A large number of tests for assessing aerobic capacity can be used. However, this makes the choice of using the test a bit difficult. However, many things depend on the subject, his/her cardio-respiratory function, and the availability of equipment and trained personnel.
Ultimately, designing and implementing a good fitness program is equally important and even more important, both as a preventive measure for cardiovascular disease and as a fitness goal.
Orignal From: VO2 Max: Measurement of cardiopulmonary function
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